Former 'The OC' actress Mischa Barton is taking her Irish-born mum Nuala to court over misappropriation of earnings.

In addition to the income discrepancies, Mischa is accusing Nuala of kicking her out of her Beverly Hills home after arranging ownership of the eight-bedroom property to be in her name as well as her daughter’s.

Mischa says that her father and Nuala are still “comfortably” living at the house.

An insider informed People magazine that Mischa had been mulling over whether to sue for quite some time, but made the final decision to go forward with a court case when Nuala locked her out of the multi-million dollar home in question.

"When she said to her mom, 'I'm going to have to sue you for the rights to what I own,' her mom said, 'Fine, get out of the house. You will never sue us,' " the source detailed. "This was two years ago. And [Mischa] got the point where she said, 'I don't care

Mischa Barton (R) and mother Nuala attend the Mischa Barton Boutique flagship store launch party at Old Spitalfields Market on August 8, 2012